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. 2019 Jun 10;20(11):2819. doi: 10.3390/ijms20112819

Figure 1.

Figure 1

Patient 1 Intracranial and Spinal Imaging. Panel (A): Mid-sagittal T1-weighted sequence shows lowest tonsillar position of 7 mm through the foramen magnum. Narrow underdeveloped clivus and occipital bone as well as uncalcified synchondroses of the odontoid are appreciated (arrowheads). Panel (B): Axial CT of the head revealed abnormal ossification of the occipital bone. Panel (C): Axial CT of the head showing uncalcified petroclival synchondrosis (arrowheads). Panel (D): Axial CT of lumbo-sacral spine shows spina bifida occulta of S1 (arrowhead) and segmentation anomaly of the sacral ala (arrow).